newlib-cygwin/newlib/libc/stdio64/tmpfile64.c

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2002-07-17 Jeff Johnston <jjohnstn@redhat.com> * configure.host(stdio64_dir): New setting that is used to enable building of new stdio64 directory. * libc/Makefile.am[HAVE_STDIO64_DIR]: Add support for large files. (stmp-stdio64,stdio64.texi): New targets to optionally add in stdio64 info to info files. * libc/Makefile.in: Regenerated. * libc/configure: Ditto. * libc/configure.in: Add configuration variables that are set when stdio64 is selected as subdir in configure.host. * libc/libc.texinfo: Add optional menu item for Stdio64, based on whether STDIO64 flag is set or not. * libc/sys.tex: Add optional stdio64 syscalls based on whether STDIO64 flag is set or not. * libc/include/reent.h[__LARGE64_FILES]: Add new stdio64 _r sycall routines. * libc/include/stdio.h[__LARGE64_FILES]: Add new stdio64 prototypes. (FILE): Typedef'd to __FILE instead of struct __sFILE directly. (__SL64): New file flag indicating file is opened via fopen64. * libc/include/sys/_types.h(_off64_t): Added. * libc/include/sys/config.h: For x86-linux, define __LARGE64_FILES. * libc/include/sys/reent.h(struct __sFILE64): New file structure for 64-bit offset large file support. (__FILE): New intermediate type either set to struct __sFILE64 or struct __sFILE, depending on whether __LARGE64_FILES is set or not. * libc/reent/Makefile.am[HAVE_STDIO64_DIR]: Add new files. * libc/reent/Makefile.in: Regenerated. * libc/reent/fstat64r.c: New file. * libc/reent/lseek64r.c: Ditto. * libc/reent/open64r.c: Ditto. * libc/reent/reent.tex: Optionally add stdio64 reentrant syscalls based on whether STDIO64 flag is set. * libc/stdio/stdio.tex: Add blank line. * libc/stdio64/Makefile.am: New file. * libc/stdio64/Makefile.in: Ditto. * libc/stdio64/fgetpos64.c: Ditto. * libc/stdio64/fopen64.: Ditto. * libc/stdio64/freopen64.c: Ditto. * libc/stdio64/fseeko64.c: Ditto. * libc/stdio64/fsetpos64.c: Ditto. * libc/stdio64/ftello64.c: Ditto. * libc/stdio64/local64.h: Ditto. * libc/stdio64/stdio64.c: Ditto. * libc/stdio64/stdio64.tex: Ditto. * libc/stdio64/tmpfile64.c: Ditto. * libc/sys/linux/io64.c: Add weak aliases for lseek64, fstat64, and open64.
2002-07-18 07:25:44 +08:00
#ifdef __LARGE64_FILES
/*
FUNCTION
<<tmpfile64>>---create a large temporary file
INDEX
tmpfile64
INDEX
_tmpfile64_r
ANSI_SYNOPSIS
#include <stdio.h>
FILE *tmpfile64(void);
FILE *_tmpfile64_r(void *<[reent]>);
TRAD_SYNOPSIS
#include <stdio.h>
FILE *tmpfile64();
FILE *_tmpfile64_r(<[reent]>)
char *<[reent]>;
DESCRIPTION
Create a large temporary file (a file which will be deleted automatically),
using a name generated by <<tmpnam>>. The temporary file is opened with
the mode <<"wb+">>, permitting you to read and write anywhere in it
as a binary file (without any data transformations the host system may
perform for text files). The file may be larger than 2GB.
The alternate function <<_tmpfile64_r>> is a reentrant version. The
argument <[reent]> is a pointer to a reentrancy structure.
Both <<tmpfile64>> and <<_tmpfile64_r>> are only defined if __LARGE64_FILES
is defined.
RETURNS
<<tmpfile64>> normally returns a pointer to the temporary file. If no
temporary file could be created, the result is NULL, and <<errno>>
records the reason for failure.
PORTABILITY
<<tmpfile64>> is a glibc extension.
Supporting OS subroutines required: <<close>>, <<fstat>>, <<getpid>>,
<<isatty>>, <<lseek64>>, <<open64>>, <<read>>, <<sbrk>>, <<write>>.
<<tmpfile64>> also requires the global pointer <<environ>>.
*/
#include <stdio.h>
#include <errno.h>
FILE *
_DEFUN (_tmpfile64_r, (ptr),
struct _reent *ptr)
{
FILE *fp;
int e;
char *f;
char buf[L_tmpnam];
if ((f = _tmpnam_r (ptr, buf)) == NULL)
return NULL;
fp = fopen64 (f, "wb+");
e = ptr->_errno;
_CAST_VOID remove (f);
ptr->_errno = e;
return fp;
}
#ifndef _REENT_ONLY
FILE *
_DEFUN_VOID (tmpfile64)
{
return _tmpfile64_r (_REENT);
}
#endif
#endif /* __LARGE64_FILES */